Superfine calcium carbonate multistage vertical roller mill

Abstract

The invention belongs to the technical field of heavy industrial mechanical equipment, and particularly relates to a superfine calcium carbonate multistage vertical roller mill which comprises a roller mill body, roller milling mechanisms are arranged on the outer side of the bottom of the roller mill body in an annular array mode, a conical barrel is fixedly installed at the top end in the roller mill body, and a secondary grinding pipe is fixedly connected to the bottom of the conical barrel. A hollow cylinder is integrally arranged at the top of the conical cylinder, a fan cylinder is rotationally assembled in the hollow cylinder, a grinding roller is rotationally assembled at the end, located in the roller mill body, of the top shell, polarization shafts are rotationally assembled on the two sides of the interior of the grinding roller, and a collecting disc is integrally arranged at the top of the secondary grinding pipe. Limiting plates are rotationally assembled on the inner side wall of the hollow cylinder in an array mode. The raw material shearing, crushing and grinding effects of the grinding roller can be improved, a measure for hindering vibration transmission is taken, meanwhile, the problems of fine particle collection and treatment are solved, and a structure for cleaning the separator is further provided.

Description

Technical Field

[0001] The invention belongs to the technical field of heavy industrial machinery and equipment, and particularly relates to an ultrafine calcium carbonate multi-stage vertical roller mill. Background Art

[0002] In vertical roller mill, the material enters the center of the grinding disc through the air-lock feeder and moves toward the edge under the action of centrifugal force. It is initially crushed before contacting the grinding roller. The grinding roller applies 50-300MPa pressure on the material layer under hydraulic pressure, and realizes efficient grinding through the material bed crushing principle. Hot air (below 350℃) blows qualified fine powder to the separator for separation, and the coarse powder returns to the grinding disc. The slag is discharged through the scraper, and the fine powder enters the pulse dust collector or cyclone dust collector with the air flow. It is mainly used for raw meal preparation, slag micro-powder production, coal powder grinding, and ultra-fine grinding of limestone.

[0003] In the use of vertical roller mill, there are still the following problems: Efficiency problem: for raw materials that are not fully ground but are sufficiently blown up, after returning to the grinding disc, they are very likely to be directly thrown to the edge by the centrifugal force of the grinding disc and blown up again. Due to their light weight, they cannot stay stably in the grinding area of the grinding roller. As a result, such particles will frequently move in the roller mill and cannot be ground quickly, thereby reducing the grinding efficiency. The collection and treatment of such particles are problems that need to be solved urgently. In addition, how to start from the grinding aspect and improve the grinding efficiency is also an area that needs improvement; Maintenance and cleaning are difficult. Most of the methods for cleaning the separator are to open the equipment before maintenance and cleaning. Maintenance is difficult, complicated, and time-consuming. The cleaning work of the separator cannot be fully automatic. Summary of the Invention

[0004] The purpose of the present invention is to provide a multi-stage vertical roller mill for ultrafine calcium carbonate, which can improve the shearing, crushing and grinding effect of the grinding rollers on the raw materials, and has measures to hinder the transmission of vibration, while solving the problem of collecting and processing fine particles, and also provides a structure for cleaning the separator.

[0005] The technical solutions adopted by the present invention are as follows: A multi-stage vertical roller mill for ultrafine calcium carbonate comprises a roller mill body, a roller mill mechanism is arranged in an annular array outside the bottom of the roller mill body, a cone is fixedly installed at the top of the roller mill body, a secondary grinding tube is fixedly connected to the bottom of the cone, and a hollow cylinder is integrally provided on the top of the cone; The roller grinding mechanism includes a top shell and a grinding roller. Polarization axes are rotatably assembled on both sides of the grinding roller, and eccentric counterweights are integrally provided at both ends of the polarization axis. When the polarization axis and the eccentric counterweight rotate, the grinding roller applies additional compressive stress to the grinding stone. A collecting tray is integrated on the top of the secondary grinding tube to collect stones that do not reach the discharge size and guide them into the secondary grinding tube for crushing; The inner wall of the hollow cylinder is assembled with a limit plate in an array-like rotation, and the outer side of the hollow cylinder is movably assembled with a knock rod. When maintaining the equipment, the gap between adjacent limit plates is adjusted and the knock rod is used to discharge stones stuck in the gap.

[0006] A feeding pipe for introducing raw materials is integrally provided on one side of the middle part of the roller mill body, a discharge port for discharging powdered raw materials is integrally provided on the top of the roller mill body, hot air pipes for introducing hot air flow are integrally provided on both sides of the bottom of the roller mill body, a slag discharge pipe is integrally provided on one side of the bottom of the roller mill body, a functional shell is integrally provided on one side outside the discharge port, and an annular shell is integrally provided on the edge of the inner bottom surface of the discharge port.

[0007] A main power machine base is provided at the bottom of the roller mill body, a frustum seat is rotatably assembled on the top of the main power machine base, and the frustum seat is driven to rotate by the power mechanism inside the main power machine base, an air guide shell is installed inside the roller mill body and at the edge of the frustum seat, and the air guide shell is used to guide the hot air flow introduced by the hot air pipe upward to the interior of the roller mill body, a liner is installed in an array on the top of the frustum seat, and a rubber composite pad is laid between the liner and the top surface of the frustum seat, a slag brush is installed in an array on the outer wall of the frustum seat, and the slag brush is used to sweep the stones that fall into the air guide shell toward the slag pipe; A fan cylinder is rotatably assembled inside the hollow cylinder. A power shaft is fixedly connected to the central axis of the fan cylinder. The power shaft extends to the top of the roller mill body and is driven to rotate by the power mechanism on the top of the roller mill body.

[0008] The roller grinding mechanism also includes a base, a bottom of one end of the top shell is integrally provided with a force arm, and the force arm is hinged to the top of the base, a hydraulic cylinder is fixedly installed inside the base, and the telescopic output end of the hydraulic cylinder is connected to the bottom end of the force arm; The grinding roller is rotatably assembled on one end of the top shell located inside the roller mill body, an output motor is fixedly installed inside the top shell, the output shaft of the output motor passes through the grinding roller, and an end cover is fixedly installed at the end, and the end cover is fixedly installed on one side of the grinding roller. A liner ring 1 and a liner ring 2 are respectively embedded and installed inside the two ends of the grinding roller, and a liner ring 1 is provided between the surface of the liner ring 1 and the inner wall of the grinding roller, and a liner ring 2 is provided between the surface of the liner ring 2 and the inner wall of the grinding roller. A bearing 1 is sleeved between the liner ring 1 and the top shell, and a bearing 2 is sleeved between the top shell and one end of the output shaft of the output motor; The outer wall of one end of the top shell extending to the inner side of the grinding roller is integrally provided with a gear ring plate, and the outer walls on both sides of one end of the output shaft of the output motor are rotatably assembled with gear 1, gear 1 is engaged with the gear ring plate, and gear 1 is connected to one end of the adjacent polarization axis through a sleeved synchronous belt transmission.

[0009] The bottom of the conical cylinder is in a cone shape that converges inward, the size of the top edge of the collection plate is larger than the size of the bottom edge of the conical cylinder, the inner wall of the bottom of the secondary grinding tube is fixedly installed with an inner grinding block, the power shaft extends to one end of the bottom of the fan cylinder and is connected to a connecting shaft through a coupling, and the bottom end of the connecting shaft is fixedly installed with a conical grinding block, which cooperates with the inner grinding block to crush the raw materials collected inside the secondary grinding tube.

[0010] A rotating rod is provided at one end of the outer side of the limit plate, and the limit plate and the limit plate are hinged through the rotating rod. The top of the rotating rod extends to the interior of the ring shell, and the top of the rotating rod is fixedly connected to a curved rod. The interior of the ring shell is rotatably assembled with a ring plate, and the inner side of the ring plate is provided with a centripetal groove in a circular array, and the end of the curved rod passes through the corresponding centripetal groove, and a local tooth is integrally provided on one side of the edge of the ring plate.

[0011] The outer movable sleeve at the top of the hollow cylinder is provided with an outer ring gear, and the outer movable sleeve at the bottom of the hollow cylinder is provided with a collar, and the outer ring gear and the collar are fixedly connected. Two knock rods are rotated and assembled on both sides of the outer ring gear and the collar at the same time, and a knock arm is fixedly assembled on the outer surface of the knock rod. The two ends of the knocking rod are connected to the connection with the outer ring teeth and the ring with a coil spring. The top of the knocking rod is fixedly connected to a push rod. The top of the hollow cylinder is fixed with arc-edge protrusions in a circular array. When the push rod contacts the arc-edge protrusion, the corresponding knocking rod rotates and the corresponding coil spring is contracted.

[0012] A worm is assembled and rotated on one side of the inner ring shell, and the worm is meshed with the local teeth. A second gear is assembled and rotated on the inner side of the functional shell close to the outer ring teeth, and the second gear is meshed with the outer ring teeth.

[0013] The interior of the functional shell is provided with a maintenance power mechanism for working when maintaining the limit plate; The maintenance power mechanism includes a motor and a cylinder fixedly installed inside the functional shell. The internal rotation assembly of the functional shell is equipped with transmission shaft one, transmission shaft two and transmission shaft three. Transmission shaft one and transmission shaft three are arranged perpendicular to each other and are connected by a helical gear set. Transmission shaft three is connected to the worm gear through chain two provided at both ends, and transmission shaft two is connected to gear two through a helical gear set.

[0014] The output shaft of the motor and the transmission shaft 1 are on the same axis, and the ends of the transmission shaft 1 and the transmission shaft 2 that are away from each other are fixedly installed with an internal gear tube, and the two internal gear tubes are arranged in opposite directions. The internal rotation assembly of the functional shell is equipped with a lever frame, and the telescopic output end of the cylinder is connected to the top of the lever frame. The inner side of the bottom end of the lever frame is connected and assembled with a synchronous shell. Both ends of the top and bottom of the synchronous shell are rotationally assembled with bevel gears, and the two internal gear tubes are arranged back to back and the two are connected by a chain 1 inside the synchronous shell. The bevel gears and the internal gear tubes on the same axis form a detachable meshing, and the bevel gear at the top and the output shaft of the motor form a sliding assembly by a slider slot, and the bevel gear at the bottom and the movable sleeve are arranged on the transmission shaft 2.

[0015] The technical effects achieved by the present invention are: In the present invention, when the polarization axis rotates together with the eccentric counterweight, high-frequency vibration is generated, thereby giving the grinding roller additional compressive stress to the grinding stone, improving the shearing, crushing and grinding effects, and improving the grinding efficiency; In addition, two sets of polarization axes are installed in an alternating manner. When in operation, the two sets of polarization axes will restrain each other, thereby obtaining a more uniform vibration force. The vibration force is no longer just perpendicular to the surface of the frustum seat, but a swingable multi-directional vibration force with a wider force direction, which indirectly increases the range of shearing and crushing of the raw materials by the grinding roller and reduces the load on the frustum seat. Among them, the rubber composite pad laid between the liner and the top surface of the frustum seat can hinder the transmission of vibration and reduce the possibility of damage to the power mechanism inside the main power machine seat due to vibration. Pad 1 and Pad 2 also play the role of hindering vibration transmission and can reduce the wear between the grinding roller and the top shell.

[0016] The present invention collects raw materials that are not fully ground but are sufficiently blown up, and crushes them deeply, giving the equipment the function of multi-stage grinding, which can greatly improve the output rate and alleviate the situation where fine particles are directly thrown to the edge of the frustum seat and blown up again after recovery, thereby solving the problem that fine particles cannot stay in the grinding area of the grinding roller due to their light weight.

[0017] The present invention can increase the gap between the ends of adjacent limit plates by controlling the rotation of each limit plate. By adjusting the gap between adjacent limit plates, stones stuck in the gap are discharged, thus solving the problem of material jamming and eliminating the need to open the equipment for maintenance and cleaning. In addition, the knocking rod is controlled to rotate around the outer periphery of the hollow cylinder, and the limit plate can be knocked synchronously by the knocking arm, thereby cleaning the stones stubbornly attached to the surface of the limit plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front structural diagram of a vertical roller mill provided by an embodiment of the present invention; Figure 2 1. It is a diagram showing the internal structure of a vertical roller mill provided by an embodiment of the present invention; Figure 3 is a cross-sectional structural diagram of a roller grinding mechanism provided by an embodiment of the present invention; Figure 4 yes Figure 3 A local enlarged structural diagram at point A in the middle; Figure 5 is a disassembled diagram of a roller grinding mechanism provided by an embodiment of the present invention; Figure 6 Schematic diagram of the combination of a cone, a secondary grinding tube, and a fan provided by an embodiment of the present invention; Figure 7 yes Figure 6 A local enlarged structural diagram at point B in the middle; Figure 8 is a cross-sectional structural diagram of a roller mill body and a functional shell provided by an embodiment of the present invention; Figure 9 This is a diagram of a hollow cylinder and a maintenance power mechanism provided by an embodiment of the present invention; Figure 10 yes Figure 9 A partial enlarged structural diagram at point C in the middle; Figure 11 is a top plan view of a hollow cylinder provided by an embodiment of the present invention; Figure 12 This is a schematic diagram of the combination of the outer ring gear and the maintenance power mechanism provided by an embodiment of the present invention; Figure 13 It is a structural diagram of the maintenance power mechanism provided by an embodiment of the present invention.

[0019] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Roller mill body; 101. Feeding pipe; 102. Discharge port; 103. Hot air pipe; 104. Slag discharge pipe; 105. Functional shell; 106. Ring shell; 2. Main power machine base; 201. Cone base; 202. Slag discharge brush; 203. Liner; 3. Wind guide shell; 4. Roller mill mechanism; 401. Base; 402. Lever; 403. Hydraulic cylinder; 404. Top shell; 405. Grinding roller; 406. Output motor; 407. End cover; 408. Bushing 1; 409. Gasket 1; 410. Bushing 2; 411. Gasket 2; 412. Bearing 1; 413. Bearing 2; 414. Gear ring plate; 415. Gear 1; 416. Polarization axis; 417. Eccentric counterweight; 418. Synchronous belt; 5. Cone ;501, hollow cylinder; 502, limit plate; 503, rotating rod; 504, curved rod; 505, ring plate; 506, centripetal groove; 507, outer ring gear; 508, sleeve ring; 509, arc edge protrusion; 510, knock rod; 511, knock arm; 512, push rod; 513, local teeth; 6, secondary grinding tube; 601, collecting plate; 602, inner grinding block; 603, connecting shaft; 604, conical grinding block; 7, fan tube; 701, power shaft; 8, motor; 801, cylinder; 802, lever frame; 803, synchronous housing; 804, bevel gear; 805, transmission shaft one; 806, transmission shaft two; 807, inner gear tube; 808, transmission shaft three; 809, worm; 810, chain two; 811, gear two. DETAILED DESCRIPTION

[0020] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following examples. It should be understood that the following text is only used to describe one or more specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.

[0021] like Figures 1-13 As shown, a multi-stage vertical roller mill for ultrafine calcium carbonate includes a roller mill body 1, a roller mill mechanism 4 is arranged in a circular array on the outer side of the bottom of the roller mill body 1, a cone cylinder 5 is fixedly installed on the top of the roller mill body 1, a secondary grinding tube 6 is fixedly connected to the bottom of the cone cylinder 5, a hollow cylinder 501 is integrally provided on the top of the cone cylinder 5, and a fan cylinder 7 is rotatably assembled inside the hollow cylinder 501.

[0022] Referring to the accompanying drawings, a feeding pipe 101 for introducing raw materials is integrally provided on one side of the middle part of the roller mill body 1, a discharge port 102 for discharging powdered raw materials is integrally provided on the top of the roller mill body 1, hot air pipes 103 for introducing hot air flow are integrally provided on both sides of the bottom of the roller mill body 1, a slag discharge pipe 104 is integrally provided on one side of the bottom of the roller mill body 1, a functional shell 105 is integrally provided on one side outside the discharge port 102, and a ring shell 106 is integrally provided on the edge of the inner bottom surface of the discharge port 102.

[0023] Refer to the attached Figure 1-Figure 2 A main power machine base 2 is provided at the bottom of the roller mill body 1, and a frustum seat 201 is rotatably assembled on the top of the main power machine base 2, and the frustum seat 201 is driven to rotate by the power mechanism inside the main power machine base 2. An air guide shell 3 is installed inside the roller mill body 1 and on the edge of the frustum seat 201, and the air guide shell 3 is used to guide the hot air flow introduced by the hot air pipe 103 upward to the interior of the roller mill body 1, and a lining plate 203 is installed in an array on the top of the frustum seat 201, and a rubber composite pad is laid between the lining plate 203 and the top surface of the frustum seat 201, and a slag brush 202 is installed in an array on the outer wall of the frustum seat 201, and the slag brush 202 is used to sweep the stones falling into the air guide shell 3 toward the slag discharge pipe 104; Refer to the attached Figure 2 A power shaft 701 is fixedly connected to the central axis of the fan cylinder 7, and the power shaft 701 extends to the top of the roller mill body 1 and is driven to rotate by the power mechanism on the top of the roller mill body 1.

[0024] According to the above structure, stones are fed into the roller mill body 1 through the feeding pipe 101, and the frustum seat 201 is driven to rotate by the power mechanism inside the main power machine base 2. The stones falling on the surface of the frustum seat 201 roll toward the edge under the action of centrifugal force and are then ground. The ground powder and small particles are thrown toward the wind guide shell 3 located at the edge. The wind guide shell 3 is used to guide the hot air flow introduced by the hot air pipe 103 upward to the interior of the roller mill body 1, so that the powder and small particle raw materials can be blown upward, and the process also has a drying effect. The fan cylinder 7 has suction when rotating at high speed, and the raw materials blown to the top are sucked into the hollow cylinder 501. The powder that meets the gear requirements will eventually be discharged from the discharge port 102, while the larger particles will fall back to the surface of the frustum seat 201 through the cone cylinder 5. In addition, the large particles of raw materials that fall into the wind guide shell 3 and cannot be blown up will eventually fall to the bottom. The rotating frustum seat 201 can sweep the raw materials to the slag discharge pipe 104 with the help of the slag discharge brush 202 and discharge them. The above process is the main working process of the vertical roller mill, which is all existing technology and will not be described in detail here.

[0025] Example 1: Refer to the attached Figure 3 The roller grinding mechanism 4 includes a base 401 and a top shell 404. A force arm 402 is integrally provided at the bottom of one end of the top shell 404, and the force arm 402 is hinged to the top of the base 401. A hydraulic cylinder 403 is fixedly installed inside the base 401, and the telescopic output end of the hydraulic cylinder 403 is connected to the bottom end of the force arm 402. Refer to the attached Figure 4-Figure 5The top shell 404 is located at one end of the roller mill body 1 and is rotatably assembled with a grinding roller 405. An output motor 406 is fixedly installed inside the top shell 404. The output shaft of the output motor 406 passes through the grinding roller 405, and an end cover 407 is fixedly installed at the end. The end cover 407 is also fixedly installed on one side of the grinding roller 405. A liner ring 1 408 and a liner ring 2 410 are respectively embedded in the two ends of the grinding roller 405. A liner 1 409 is provided between the surface of the liner ring 1 408 and the inner wall of the grinding roller 405, and a liner 2 411 is provided between the surface of the liner ring 2 410 and the inner wall of the grinding roller 405. A bearing 1 412 is sleeved between the liner ring 1 408 and the top shell 404, and a bearing 2 413 is sleeved between the top shell 404 and one end of the output shaft of the output motor 406. Refer to the attached Figure 4-Figure 5 Polarization axes 416 are rotatably assembled on both sides of the grinding roller 405, and eccentric counterweights 417 are integrally provided at both ends of the polarization axis 416. A gear ring plate 414 is integrally provided on the outer wall of one end of the top shell 404 extending to the inner side of the grinding roller 405. Gear 1 415 is rotatably assembled on the outer walls of both sides of one end of the output shaft of the output motor 406. Gear 1 415 is meshed with the gear ring plate 414, and gear 1 415 is connected to one end of the adjacent polarization axis 416 through a sleeved synchronous belt 418.

[0026] According to the above structure, the output motor 406 is used to drive the grinding roller 405 to rotate, and the raw materials located on the surface of each lining plate 203 will be squeezed and crushed by the grinding roller 405, so as to achieve the grinding effect. In addition, during the rotation of the grinding roller 405, since the gear ring plate 414 is always in a stationary state, the gear 415 on the outer wall of the output shaft of the output motor 406 will rotate under the engagement with the gear ring plate 414, and it will then drive the polarization axis 416 to rotate through the synchronous belt 418, so that the polarization axis 416 will rotate while revolving around the output shaft. When the polarization axis 416 rotates together with the eccentric counterweight 417, high-frequency vibrations will be generated, thereby giving the grinding roller 405 additional compressive stress to the grinding stone, improving the shearing, crushing and grinding effects, and improving High grinding efficiency; it is set to two groups of polarization axes 416 that are staggered and installed. When they are in operation, the two groups of polarization axes 416 will restrain each other, so as to obtain a more uniform vibration force, and the vibration force is no longer just perpendicular to the surface of the frustum seat 201, but a swingable multi-directional vibration force. The direction of the force is wider, which indirectly increases the range of shearing and crushing of the raw materials by the grinding roller 405 and reduces the load on the frustum seat 201. Among them, the rubber composite pad laid between the liner 203 and the top surface of the frustum seat 201 can hinder the transmission of vibration and reduce the possibility of damage to the internal power mechanism of the main power machine base 2 due to vibration. In addition, the liner 1 409 and the liner 2 411 also play the role of hindering the transmission of vibration, which can reduce the wear between the grinding roller 405 and the top shell 404.

[0027] The working principle of the present invention is as follows: the output motor 406 is used to drive the grinding roller 405 to rotate, and the raw materials located on the surface of each lining plate 203 will be squeezed and crushed by the grinding roller 405, so as to achieve the grinding effect. In addition, during the rotation of the grinding roller 405, since the gear ring plate 414 is always in a stationary state, the gear 415 on the outer wall of the output shaft of the output motor 406 will rotate under the engagement with the gear ring plate 414, and it will then drive the polarization axis 416 to rotate through the synchronous belt 418, so that the polarization axis 416 will rotate while revolving around the output shaft. When the polarization axis 416 rotates together with the eccentric counterweight 417, high-frequency vibrations will be generated, thereby giving the grinding roller 405 additional compressive stress to the grinding stone.

[0028] Example 2: Refer to the attached Figure 6-Figure 7 The bottom of the cone cylinder 5 is in a cone shape that converges inward. A collecting plate 601 is integrally provided on the top of the secondary grinding tube 6. The size of the top edge of the collecting plate 601 is larger than the size of the bottom edge of the cone cylinder 5. An inner grinding block 602 is fixedly installed on the inner wall of the bottom of the secondary grinding tube 6. The power shaft 701 extends to one end of the bottom of the fan cylinder 7 and is connected to a connecting shaft 603 through a coupling, and a conical grinding block 604 is fixedly installed on the bottom end of the connecting shaft 603. The conical grinding block 604 cooperates with the inner grinding block 602 to crush the raw materials collected inside the secondary grinding tube 6.

[0029] According to the above structure, part of the raw materials that have not been fully ground and are sufficiently blown up can be recovered by the cone cylinder 5, and part can fall into the collection plate 601. The stones that have not reached the discharge size are collected by the collection plate 601, and they will then flow into the secondary grinding tube 6. In addition, the fan cylinder 7 can drive the cone grinding block 604 to rotate together through the connecting shaft 603. The cone grinding block 604 cooperates with the inner grinding block 602 to deeply crush the recovered raw materials to make them closer to the discharge size. This process, by collecting the raw materials that have not been fully ground but are sufficiently blown up and deeply crushing them, gives the equipment the function of multi-stage grinding, which can greatly improve the output rate, and can alleviate the situation where fine particles are directly thrown to the edge of the cone seat 201 after recovery and blown up again, solving the problem that fine particles cannot stay in the grinding area of the grinding roller 405 due to their light weight.

[0030] The working principle of the present invention is as follows: among the raw materials that have not been fully ground and are blown up sufficiently, a part can be recovered by the cone cylinder 5, and a part can fall into the collection plate 601. The stones that have not reached the discharge size are collected by the collection plate 601, and then they will flow into the secondary grinding tube. In addition, the fan cylinder 7 can drive the cone grinding block 604 to rotate together through the connecting shaft 603. The cone grinding block 604 cooperates with the inner grinding block 602 to deeply crush the recovered raw materials to make them closer to the discharge size.

[0031] Example 3: Refer to the attached Figures 8-11 The inner wall of the hollow cylinder 501 is assembled with a limit plate 502 in an array-type rotation, and a rotating rod 503 is provided at one end of the outer side of the limit plate 502, and the limit plate 502 and the limit plate 502 are hinged through the rotating rod 503. The top of the rotating rod 503 extends to the inside of the ring shell 106, and the top of the rotating rod 503 is fixedly connected with a curved rod 504. The inside of the ring shell 106 is assembled with a ring plate 505 in a rotation manner, and the inner side of the ring plate 505 is provided with a centripetal groove 506 in an annular array, and the end of the curved rod 504 passes through the corresponding centripetal groove 506, and a local tooth 513 is integrally provided on one side of the edge of the ring plate 505.

[0032] Refer to the attached Figure 9 、 Figure 13 A worm 809 is rotatably assembled on one side of the inner portion of the annular housing 106 , and the worm 809 is meshed with the local teeth 513 .

[0033] According to the above structure, during equipment maintenance, after the worm 809 is controlled to rotate, the ring plate 505 can be driven to rotate inside the ring housing 106 by means of the engagement between the worm 809 and the local teeth 513. Since the curved rod 504 at the top of each limit plate 502 passes through the corresponding centripetal groove 506, each limit plate 502 rotates simultaneously with the rotating rod 503 as the axis. Figure 11 As shown, after each limit plate 502 rotates, the gap between the ends of adjacent limit plates 502 will increase. By adjusting the gap between adjacent limit plates 502, stones stuck in the gap can be discharged, solving the problem of material jamming and eliminating the need to open the equipment for maintenance and cleaning.

[0034] Refer to the attached Figure 9 、 Figure 12 The outer movable sleeve of the top of the hollow cylinder 501 is provided with an outer ring tooth 507, and the outer movable sleeve of the bottom of the hollow cylinder 501 is provided with a ring 508, and the outer ring tooth 507 and the ring 508 are fixedly connected. The outer movable sleeve of the hollow cylinder 501 is assembled with a knocking rod 510, and the outer surface of the knocking rod 510 is fixedly assembled with a knocking arm 511. The two knocking rods 510 are rotated and assembled on both sides of the outer ring tooth 507 and the ring 508 at the same time, and the two ends of the knocking rod 510 are connected with a coil spring at the connection with the outer ring tooth 507 and the ring 508. The top of the knocking rod 510 is fixedly connected with a push rod 512, and the top of the hollow cylinder 501 is fixedly provided with an arc edge protrusion 509 in a ring array, and when the push rod 512 contacts the arc edge protrusion 509, the corresponding knocking rod 510 rotates and the corresponding coil spring is contracted.

[0035] Refer to the attached Figure 12 The inner rotation assembly of the functional housing 105 close to the outer ring gear 507 is equipped with a second gear 811 , and the second gear 811 is meshed with the outer ring gear 507 .

[0036] According to the above structure, after gear 2 811 is controlled to rotate, the outer ring gear 507 and the collar 508 will rotate together around the hollow cylinder 501, and the knocking rod 510 will follow and rotate around the outer periphery of the hollow cylinder 501. When the support rod 512 at the top of the knocking rod 510 contacts the arc edge protrusion 509, the corresponding knocking rod 510 rotates and the corresponding coil spring is contracted. After the knocking rod 510 leaves the arc edge protrusion 509, under the elastic force of the coil spring, the knocking rod 510 quickly rotates and resets, and then uses the knocking arm 511 to synchronously knock the limit plate 502, thereby cleaning the stones stubbornly attached to the surface of the limit plate 502.

[0037] Refer to the attached Figure 8 、 Figure 9 、 Figure 13 , a maintenance power mechanism for maintaining the limit plate 502 is provided inside the functional shell 105; the maintenance power mechanism includes a motor 8 and a cylinder 801 fixedly installed inside the functional shell 105, and a transmission shaft 1 805, a transmission shaft 2 806 and a transmission shaft 3 808 are assembled in the internal rotation of the functional shell 105. The transmission shaft 1 805 and the transmission shaft 3 808 are arranged perpendicular to each other and are connected by a helical gear set, and the transmission shaft 3 808 is connected to the worm 809 by a chain 2 810 set at both ends, and the transmission shaft 2 806 is connected to the gear 2 811 by a helical gear set; Refer to the attached Figure 8 、 Figure 13 The output shaft of the motor 8 and the transmission shaft 1 805 are on the same axis, and the ends of the transmission shaft 1 805 and the transmission shaft 2 806 away from each other are fixedly installed with an internal gear tube 807, and the two internal gear tubes 807 are arranged in opposite directions. The internal rotation assembly of the functional shell 105 is equipped with a lever frame 802, and the telescopic output end of the cylinder 801 is connected to the top of the lever frame 802. The inner side of the bottom end of the lever frame 802 is connected and assembled with a synchronous shell 803. Both ends of the top and bottom of the synchronous shell 803 are rotatably assembled with bevel gears 804, and the two internal gear tubes 807 are arranged in back to back and the two are connected by a chain 1 transmission inside the synchronous shell 803. The bevel gear 804 and the internal gear tube 807 on the same axis form a detachable meshing. The bevel gear 804 at the top and the output shaft of the motor 8 form a sliding assembly through a slider groove. The bevel gear 804 at the bottom is movably sleeved on the transmission shaft 2 806.

[0038] According to the above structure, Figure 13As shown, when the cylinder 801 controls the lever frame 802 to make the bevel gear 804 at the bottom mesh with the internal gear tube 807 at one end of the transmission shaft 2 806, the bevel gear 804 of the output shaft of the motor 8 is separated from the internal gear tube 807 at one end of the transmission shaft 1 805. At this time, the motor 8 is working, the two bevel gears 804 rotate synchronously, the transmission shaft 1 805 does not rotate but the transmission shaft 2 806 rotates, and the gear 2 811 can be controlled to rotate; when the cylinder 801 controls the lever frame 802 to make the bevel gear 804 at the top mesh with the internal gear tube 807 at one end of the transmission shaft 1 805, the bevel gear 804 at the bottom is separated from the internal gear tube 807 at one end of the transmission shaft 2 806. At this time, the motor 8 is working, the two bevel gears 804 rotate synchronously, the transmission shaft 2 806 does not rotate but the transmission shaft 1 805 rotates, and the transmission shaft 3 808 rotates immediately and can drive the worm 809 to rotate through the chain 2 810.

[0039] The working principle of the present invention is as follows: when the cylinder 801 controls the lever frame 802 to make the bevel gear 804 at the top mesh with the internal tooth tube 807 at one end of the transmission shaft 1 805, the bevel gear 804 at the bottom is separated from the internal tooth tube 807 at one end of the transmission shaft 2 806. At this time, the motor 8 is working, the transmission shaft 1 805 rotates, and the transmission shaft 3 808 rotates immediately and can drive the worm 809 to rotate through the chain 2 810. The engagement of the worm 809 with the local teeth 513 can drive the ring plate 505 to rotate inside the ring shell 106. Since the curved rod 504 at the top of each limit plate 502 passes through the corresponding centripetal groove 506, each limit plate 502 rotates at the same time with the rotating rod 503 as the axis, as shown in FIG. Figure 11 As shown, after each limiting plate 502 rotates, the gap between the ends of adjacent limiting plates 502 will increase, so that the stones stuck in the gap can be discharged; When the cylinder 801 controls the lever frame 802 to make the bevel gear 804 at the bottom mesh with the internal gear tube 807 at one end of the second transmission shaft 806, the bevel gear 804 of the output shaft of the motor 8 is separated from the internal gear tube 807 at one end of the first transmission shaft 805. At this time, the motor 8 is working, and the second gear 811 can be controlled to rotate. By meshing the second gear 811 with the outer ring gear 507, the outer ring gear 507 and the collar 508 will rotate together around the hollow cylinder 501. The knocking rod 510 rotates around the outer periphery of the hollow cylinder 501. When the supporting rod 512 at the top of the knocking rod 510 contacts the arc-edge protrusion 509, the corresponding knocking rod 510 rotates and the corresponding coil spring is contracted. After the knocking rod 510 leaves the arc-edge protrusion 509, under the elastic force of the coil spring, the knocking rod 510 quickly rotates and resets, and then the knocking arm 511 is used to simultaneously knock the limit plate 502, thereby cleaning the stones stubbornly attached to the surface of the limit plate 502.

[0040] The foregoing is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained herein shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A multi-stage vertical roller mill for producing ultrafine calcium carbonate, comprising a roller mill body (1), characterized in that: A roller grinding mechanism (4) is provided in an annular array on the outer side of the bottom of the roller mill body (1); a cone cylinder (5) is fixedly installed on the top of the interior of the roller mill body (1); a secondary grinding tube (6) is fixedly connected to the bottom of the cone cylinder (5); and a hollow cylinder (501) is integrally provided on the top of the cone cylinder (5); The roller grinding mechanism (4) comprises a top shell (404) and a grinding roller (405). Polarization axes (416) are rotatably assembled on both sides of the interior of the grinding roller (405), and eccentric counterweights (417) are integrally provided at both ends of the polarization axis (416). When the polarization axis (416) and the eccentric counterweight (417) rotate, the grinding roller (405) is given additional compressive stress to grind the stone. A collecting plate (601) is integrally provided on the top of the secondary grinding tube (6), and stones that do not reach the discharge size are collected by the collecting plate (601) and introduced into the secondary grinding tube (6) for crushing; The inner side wall of the hollow cylinder (501) is assembled with a limit plate (502) in an array-like rotation manner, and the outer side of the hollow cylinder (501) is movably assembled with a knock rod (510). When the equipment is maintained, the gap between adjacent limit plates (502) is adjusted and the knock rod (510) is used to discharge stones stuck in the gap.

2. A superfine calcium carbonate multi-stage vertical roller mill according to claim 1, characterized in that: A feeding pipe (101) for introducing raw materials is integrally provided on one side of the middle of the roller mill body (1), a discharge port (102) for discharging powdered raw materials is integrally provided on the top of the roller mill body (1), hot air pipes (103) for introducing hot air flow are integrally provided on both sides of the bottom of the roller mill body (1), a slag discharge pipe (104) is integrally provided on one side of the bottom of the roller mill body (1), a functional shell (105) is integrally provided on one side outside the discharge port (102), and an annular shell (106) is integrally provided on the edge of the inner bottom surface of the discharge port (102).

3. A superfine calcium carbonate multi-stage vertical roller mill according to claim 2, characterized in that: The bottom of the roller mill body (1) is provided with a main power machine base (2), the top of the main power machine base (2) is rotatably assembled with a cone seat (201), and the cone seat (201) is driven to rotate by the power mechanism inside the main power machine base (2), the inside of the roller mill body (1) and located at the edge of the cone seat (201) is provided with a wind guide shell (3), and the wind guide shell (3) is used to guide the hot air flow introduced by the hot air pipe (103) upward to the inside of the roller mill body (1), the top of the cone seat (201) is provided with a lining plate (203) in an array, and a rubber composite pad is laid between the lining plate (203) and the top surface of the cone seat (201), and the outer wall of the cone seat (201) is provided with a slag brush (202) in an array, and the slag brush (202) is used to sweep the stone material falling into the wind guide shell (3) toward the slag discharge pipe (104); A fan cylinder (7) is rotatably assembled inside the hollow cylinder (501), and a power shaft (701) is fixedly connected to the central axis of the fan cylinder (7). The power shaft (701) extends to the top of the roller mill body (1) and is driven to rotate by a power mechanism at the top of the roller mill body (1).

4. A superfine calcium carbonate multi-stage vertical roller mill according to claim 3, characterized in that: The roller grinding mechanism (4) further comprises a base (401), a force arm (402) is integrally provided at the bottom of one end of the top shell (404), and the force arm (402) is hinged to the top of the base (401), a hydraulic cylinder (403) is fixedly installed inside the base (401), and a telescopic output end of the hydraulic cylinder (403) is connected to the bottom end of the force arm (402); The grinding roller (405) is rotatably assembled on one end of the top shell (404) located inside the roller mill body (1). An output motor (406) is fixedly installed inside the top shell (404). The output shaft of the output motor (406) passes through the grinding roller (405) and an end cover (407) is fixedly installed at the end. The end cover (407) is also fixedly installed on one side of the grinding roller (405). A liner ring is embedded in the interior of each end of the grinding roller (405). (408) and a liner ring (410), and a liner ring (409) is provided between the surface of the liner ring (408) and the inner wall of the grinding roller (405), and a liner ring (411) is provided between the surface of the liner ring (410) and the inner wall of the grinding roller (405), a bearing (412) is provided between the liner ring (408) and the top shell (404), and a bearing (413) is provided between the top shell (404) and one end of the output shaft of the output motor (406); The outer wall of one end of the top shell (404) extending to the inner side of the grinding roller (405) is integrally provided with a gear ring plate (414), and the outer walls on both sides of one end of the output shaft of the output motor (406) are rotatably assembled with gear 1 (415), the gear 1 (415) is meshed with the gear ring plate (414), and the gear 1 (415) is connected to one end of the adjacent polarization axis (416) through a sleeved synchronous belt (418).

5. A superfine calcium carbonate multi-stage vertical roller mill according to claim 4, characterized in that: The bottom of the conical cylinder (5) is in the shape of a cone that converges inward, the size of the top edge of the collecting plate (601) is larger than the size of the bottom edge of the conical cylinder (5), an inner grinding block (602) is fixedly mounted on the inner wall of the bottom of the secondary grinding tube (6), one end of the power shaft (701) extending to the bottom of the fan cylinder (7) is connected to a connecting shaft (603) via a coupling, and a conical grinding block (604) is fixedly mounted on the bottom end of the connecting shaft (603), and the conical grinding block (604) cooperates with the inner grinding block (602) to grind the raw materials collected in the secondary grinding tube (6).

6. The ultrafine calcium carbonate multi-stage vertical roller mill according to claim 5, characterized in that: A rotating rod (503) is provided at one end of the outer side of the limiting plate (502), and the limiting plate (502) and the limiting plate (502) are hingedly connected through the rotating rod (503). The top of the rotating rod (503) extends to the inside of the ring shell (106), and the top of the rotating rod (503) is fixedly connected to a curved rod (504). The inside of the ring shell (106) is rotatably assembled with a ring plate (505), and the inner side of the ring plate (505) is provided with a centripetal groove (506) in a circular array, and the end of the curved rod (504) passes through the corresponding centripetal groove (506). One side of the edge of the ring plate (505) is integrally provided with a local tooth (513).

7. The ultrafine calcium carbonate multi-stage vertical roller mill according to claim 6, characterized in that: The outer movable sleeve at the top of the hollow cylinder (501) is provided with an outer ring tooth (507), and the outer movable sleeve at the bottom of the hollow cylinder (501) is provided with a collar (508), and the outer ring tooth (507) and the collar (508) are in a fixed connection relationship. Two knock rods (510) are simultaneously rotated and assembled on both sides of the outer ring tooth (507) and the collar (508), and a knock arm (511) is fixedly assembled on the outer surface of the knock rod (510). Coil springs are connected to both ends of the knock rod (510) and at the connection points with the outer ring teeth (507) and the collar (508); a push rod (512) is fixedly connected to the top of the knock rod (510); arc-edge protrusions (509) are fixedly provided in an annular array at the top of the hollow cylinder (501); and when the push rod (512) contacts the arc-edge protrusions (509), the corresponding knock rod (510) rotates and the corresponding coil spring is contracted.

8. The ultrafine calcium carbonate multi-stage vertical roller mill according to claim 7, characterized in that: A worm (809) is rotatably assembled on one side of the inner portion of the annular housing (106), and the worm (809) is meshed with the local teeth (513). A second gear (811) is rotatably assembled on the inner portion of the functional housing (105) near the outer ring teeth (507), and the second gear (811) is meshed with the outer ring teeth (507).

9. The ultrafine calcium carbonate multi-stage vertical roller mill according to claim 8, characterized in that: A maintenance power mechanism for operating when maintaining the limit plate (502) is provided inside the functional housing (105); The maintenance power mechanism includes a motor (8) and a cylinder (801) fixedly mounted inside a functional housing (105); the functional housing (105) is internally rotated and assembled with a transmission shaft 1 (805), a transmission shaft 2 (806) and a transmission shaft 3 (808); the transmission shaft 1 (805) and the transmission shaft 3 (808) are arranged perpendicular to each other and are connected to each other through a helical gear set; the transmission shaft 3 (808) and the worm (809) are connected to each other through a chain 2 (810) provided at both ends; and the transmission shaft 2 (806) and the gear 2 (811) are connected to each other through a helical gear set.

10. The ultrafine calcium carbonate multi-stage vertical roller mill according to claim 9, characterized in that: The output shaft of the motor (8) and the transmission shaft 1 (805) are on the same axis, and the ends of the transmission shaft 1 (805) and the transmission shaft 2 (806) away from each other are fixedly installed with an inner tooth tube (807), and the two inner tooth tubes (807) are arranged in opposite directions. The internal rotation of the functional shell (105) is assembled with a lever frame (802), the telescopic output end of the cylinder (801) is connected to the top of the lever frame (802), and the inner side of the bottom end of the lever frame (802) is connected and assembled with a synchronous shell (803). ), both ends of the top and bottom of the synchronous housing (803) are rotatably assembled with bevel gears (804), and the two inner tooth tubes (807) are arranged in back-to-back relationship and the two are connected by a chain transmission inside the synchronous housing (803), the bevel gear (804) and the inner tooth tube (807) on the same axis form a detachable meshing, the bevel gear (804) at the top and the output shaft of the motor (8) form a sliding assembly by means of a slider slot, and the bevel gear (804) at the bottom is movably sleeved on the transmission shaft 2 (806).

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